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Fiber Optics Fundamentals
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Communication Basics #13 Fiber Optics Fundamentals
Communication Basics #27 Worked Example: Fiber Link Budget
Communication Basics #29 Worked Example: Doubling the Distance — Fiber Limits and the EDFA
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Solution Notebook · EN
#13 Snell's law, critical angle, total internal reflection, core-cladding structure, optical sources, operating windows, singlemode and multimode fibre
Solution Notebook · EN
#27 calculate the ideal attenuation-only 100-km link budget for a +10-dBm transmitter, two 1-dB connectors, 0.3-dB/km fiber, and a −60-dBm receiver threshold; distinguish signed transfer gain from positive loss magnitude, bound the 180-km ideal loss-limited length, and apply sensitivity, overload, dispersion, OSNR, and lifecycle gates to the 300/50-km designs
Solution Notebook · EN
#29 calculate −30-dBm received power and 20-dB raw margin from a +1-dBm transmitter, two 0.5-dB connectors, 30-dB total installed-link fiber loss, −50-dBm receiver sensitivity, and a 15-dB required margin; under a uniform distributed-attenuation assumption, double fiber length to 60-dB fiber loss and −60-dBm received power; add an example 25-dB EDFA to obtain −35 dBm and then apply OSNR, ASE, saturation, dispersion, nonlinearity, and span acceptance gates